Asymmetric pipe-plate type bundle pipe reactor and methanol synthesis process

Abstract

The invention discloses an asymmetric pipe-plate type bundle pipe reactor, which comprises a shell. Heat exchange pipes are arranged in the shell; the shell comprises a barrel-shaped barrel; only onefirst pipe-plate assembling unit is arranged on the upper end in the shell; three to six second pipe-plate assembling units are arranged on the lower end in the shell; the first pipe-plate assemblingunit is provided with only one first pipe plate; each second pipe-plate assembling unit comprises a second pipe plate; the upper end of each heat exchange pipe is connected with the first pipe plate;the heat exchange pipes are divided into multiple pipe groups; the lower end of the heat exchange pipe of each pipe group is arranged on one second pipe plate. The invention also discloses a methanolsynthesis process using the bundle pipe reactor. According to the reactor, the heat exchange pipes and the pipe plates are reasonably arranged in a limited space, so that an overhaul space of the reactor is enlarged within an allowable range, and the reactor can be processed and overhauled conveniently.

Description

technical field [0001] The invention specifically relates to an asymmetric tube-plate bundle tube reactor and a methanol synthesis process using the reactor. Background technique [0002] The diameters of chemical reactors vary greatly. The diameter of large reactors can exceed 10 meters, while the diameter of small reactors can be less than 1 meter. In order to maintain the reaction temperature, heat exchange tubes are generally installed in the reactors. In order to remove the heat of reaction from the reactor, in order to facilitate the design, installation and maintenance, the heat exchange system of the reactor generally has only one group, or is divided into several groups. Among them, a small reactor is equipped with a heat exchange group inside the shell, that is, in the A tube sheet is provided at both ends of the casing, and all heat exchange tubes are connected to the two tube sheets. For large-scale reactors, the heat exchange tubes are generally divided into se...

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Problems solved by technology

[0003] There is no strict distinction between large and small reactors. Therefore, whether the heat exchange tubes are grouped or not depends on the specific requirements of each equipment manufacturer and user unit. Since the processing cost of small tube sheets is relatively low, it is important to use them in reactors. Generally, small tube sheets are used as much as possible, but for small reactors, due to the small internal space of the reactor, the use of small tube sheets will make the interior of the reactor more crowded, and the process of manufacturing and subsequent maintenance , which increases the difficulty of installation and maintenance

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